Despite their best intentions, cooperation on part of the service provider might not be needed: https://www.schneier.com/blog/archives/2014/03/how_the_nsa_exp.

Despite their best intentions, cooperation on part of the service provider might not be needed: https://www.schneier.com/blog/archives/2014/03/how_the_nsa_exp.html https://www.schneier.com/blog/archives/2014/03/how_the_nsa_e... http://www.theguardian.com/world/interactive/2013/jul/31/nsa-xkeyscore-program-full-presentation http://www.theguardian.com/world/interactive/2013/jul/31/nsa... (page 17)